package org.learn.test;

public class YangHui {
    public static void main(String[] args) {
        //打印杨辉三角
        int[][] yangHui =new int[10][];
        for(int i = 0;i < yangHui.length; i++){
            yangHui[i] = new int[i+1];//开空间
            for(int j = 0; j < yangHui[i].length;j++){
                if(j == 0 || j ==yangHui[i].length - 1){
                    yangHui[i][j] = 1;
                } else{
                    yangHui[i][j] =yangHui[i-1][j] + yangHui[i-1][j-1];
                }
            }
        }
        for(int i = 0; i < yangHui.length;i++){
            for(int j = 0;j < yangHui[i].length;j++){
                System.out.print(yangHui[i][j] + "\t");
            }
            System.out.println();
        }

    }
}
